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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23 March 2007 to 31 March 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Version / remarks:
27 July 1195
Deviations:
no
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
ASTM E537-86
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
253 °C
Atm. press.:
101.71 kPa
Key result
Boiling pt.:
526 K
Atm. press.:
101.7 kPa

Table 1: Thermographic data – Determination 1

Thermal event

Interpretation

temperature

 

 

°C

K

Endotherm

Boiling point

253

526

Atmospheric pressure: 101. 71 kPa

Table 2: Thermographic data – Determination 2

Thermal event

Interpretation

temperature

 

 

°C

K

Endotherm

Boiling point

253.25

526

Atmospheric pressure: 101. 71 kPa

 

Mean boiling point = 526±0.5°C

The thermograms for both determinations 1 and 2 are attached.

Conclusions:
A boiling point value of 253°C ±0.5 at 101.71 kPa was determined in a reliable study conducted according to OECD guideline 103, and in compliance with GLP.

Description of key information

Boiling point: 253°C at 1017 hPa (OECD 103)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
253 °C

Additional information

A measured boiling point value of 253 ± 0.5°C (526 K) at 1017 hPa was determined for the substance using a differential scanning calorimetry (DSC) method according to OECD Test Guideline 103 and in compliance with GLP. The result is considered to be reliable and is selected as key study.

 

In available secondary sources to which reliability could not be assigned, boiling point values of 190 to 255°C were reported for the substance. Another secondary source reported a boiling of 125°C at a reduced pressure of 15 hPa.